x = int( input() )

if 400 <= x <= 599:
  print("8")
elif 600 <= x <= 799:
  print("7")
elif 800 <= x <= 999:
  print("6")
elif 1000 <= x <= 1199:
  print("5")
elif 1200 <= x <= 1399:
  print("4")
elif 1400 <= x <= 1599:
  print("3")
elif 1600 <= x <= 1799:
  print("2")
elif 1800 <= x <= 1999:
  print("1") x = int( input() ) x int( input() ) int input() input if 400 <= x <= 599:
  print("8")
elif 600 <= x <= 799:
  print("7")
elif 800 <= x <= 999:
  print("6")
elif 1000 <= x <= 1199:
  print("5")
elif 1200 <= x <= 1399:
  print("4")
elif 1400 <= x <= 1599:
  print("3")
elif 1600 <= x <= 1799:
  print("2")
elif 1800 <= x <= 1999:
  print("1") 400 <= x <= 599 400 <= x 400 x 599 print("8") print "8" elif 600 <= x <= 799:
  print("7") 600 <= x <= 799 600 <= x 600 x 799 print("7") print "7" elif 800 <= x <= 999:
  print("6") 800 <= x <= 999 800 <= x 800 x 999 print("6") print "6" elif 1000 <= x <= 1199:
  print("5") 1000 <= x <= 1199 1000 <= x 1000 x 1199 print("5") print "5" elif 1200 <= x <= 1399:
  print("4") 1200 <= x <= 1399 1200 <= x 1200 x 1399 print("4") print "4" elif 1400 <= x <= 1599:
  print("3") 1400 <= x <= 1599 1400 <= x 1400 x 1599 print("3") print "3" elif 1600 <= x <= 1799:
  print("2") 1600 <= x <= 1799 1600 <= x 1600 x 1799 print("2") print "2" elif 1800 <= x <= 1999:
  print("1") 1800 <= x <= 1999 1800 <= x 1800 x 1999 print("1") print "1" x = int( input() ) int( input() ) x
x = int( input() )

if 400 <= x <= 599:
  print("8")
elif 600 <= x <= 799:
  print("7")
elif 800 <= x <= 999:
  print("6")
elif 1000 <= x <= 1199:
  print("5")
elif 1200 <= x <= 1399:
  print("4")
elif 1400 <= x <= 1599:
  print("3")
elif 1600 <= x <= 1799:
  print("2")
elif 1800 <= x <= 1999:
  print("1")